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Types of Axons
Axons are of two types
In the case of myelinated axons the neurilemma is ensheathed by another covering, the myelin sheath, composed of complex lipoproteins. The terminal branches, dendrites, cell body (perikaryon) and the initial region of the axon (the axon hillock) are devoid of myelin sheath: Although the dendrites are relatively short, unsheathed, tapering, irregular in diameter, and branched in a wide array of patterns, the cell body cytoplasm extends into them. The dendrites receive synaptic endings over much of their surface and thus constitute the receptive surface of the neuron. They are like receiving antennae as a nerve cell receives messages along the dendrites but sends messages along the axon.
Making leaf collections Collect young leaves of as many varieties of plants as possible. Place various layers of news- paper or blotting paper on a firm, smooth board. Next org
a) How does the Hardy- Weinberg's expression (p²+2pq+q² =1) Describe that genetic equilibrium is maintained in a population? (b) List any two factors that can disturb the ge
Starting at the esophagus, trace the pathway of food through the system. At each organ, indicate anatomical adaptations to the general GI tract tube structure that enhance the spec
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Explain about the Carbohydrate Malabsorption? Carbohydrates malabsorption is usually caused by an inherited or acquired (in intestinal infection, celiac disease, PEM) defect in
Explain Potassium Potassium (K): Potassium restricted diets are important for patients with advanced renal failure undergoing conservative treatment or haemodialysis. Th
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